8866117440 has 672 divisors, whose sum is σ = 35347777920. Its totient is φ = 2102132736.

The previous prime is 8866117373. The next prime is 8866117451. The reversal of 8866117440 is 447116688.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25116304 + ... + 25116656.

It is an arithmetic number, because the mean of its divisors is an integer number (52600860).

Almost surely, 2^8866117440 is an apocalyptic number.

8866117440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8866117440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17673888960).

8866117440 is an abundant number, since it is smaller than the sum of its proper divisors (26481660480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8866117440 is a wasteful number, since it uses less digits than its factorization.

8866117440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 8866117440 is about 94160.0628716867. The cubic root of 8866117440 is about 2069.7179199746.

The spelling of 8866117440 in words is "eight billion, eight hundred sixty-six million, one hundred seventeen thousand, four hundred forty".